Enqueuing Library limitation

I am using Volumio 1.55 with a PI2 and an IQaudio DAC+ being fed from a OpenMediaVault NAS built with a Udoo-Quad. Having fun.
For the most part things are working well
But whenever I try to enqueue all songs from a large genre set (such as rock which has a few thousand entries) the enqueue function typically tops out at 250 selections in the playlist.
Has anyone else encountered this or is it just me?

Your input would be appreciated.